SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
quantra - A public API for quantitative finance made with Quantlib
DPlot - DPlot graphing software lets scientists and engineers graph, plot, analyze, and manipulate data.
Gekko Plus - A tool that helps you invest smarter
WinPython - The easiest way to run Python, Spyder with SciPy and friends out of the box on any Windows PC...
QuantConnect - QuantConnect provides a free algorithm backtesting tool and financial data so engineers can design algorithmic trading strategies. We are democratizing algorithm trading technology to empower investors.